Re: Wierd Error: Crashing in Debug Build, Works fine in Release

Thanks for all the replies... actually, the code that crashes is not
apart of my code. The actual call that crashes is in dbgheap.c which
is apart of msvc.

its in the function: "void * __cdecl _heap_alloc_dbg(..)" and the
assertion that goes off is this code:

      /* break into debugger at specific memory allocation */
        if (_crtBreakAlloc != -1L && lRequest == _crtBreakAlloc)
            _CrtDbgBreak();

        /* forced failure */
        if (!(*_pfnAllocHook)(_HOOK_ALLOC, NULL, nSize, nBlockUse,
lRequest, szFileName, nLine))
        {
            if (szFileName)
                _RPT2(_CRT_WARN, "Client hook allocation failure at
file %hs line %d.\n",
                    szFileName, nLine);
            else
                _RPT0(_CRT_WARN, "Client hook allocation failure.\n");

            return NULL;
        }

As for the call stack, I have no idea what this means.. but if you
look at towards the top, there is a call to
msvcr71d.dll!_heap_alloc_dbg(...) that is the call that is asserting
my error... Thanks

////////////////////////////////////////////
// Call stack
///////////////////////////////////////////

MyTestProg.exe!0045600f()
MyTestProg.exe!0046c52b()
MyTestProg.exe!00474c63()
user32.dll!77d5cd87()
MyTestProg.exe!0047e878()
MyTestProg.exe!0047e319()
user32.dll!77d4c00e()
msvcr71d.dll!_heap_alloc_dbg(unsigned int nSize=0x00325f38, int
nBlockUse=0x0012ef80, const char * szFileName=0x0012f3cc, int
nLine=0x00000000) Line 359 + 0x1e C
MyTestProg.exe!0047def9()
msvcr71d.dll!_nh_malloc_dbg(unsigned int nSize=0x00325f40, int
nhFlag=0x0012edd8, int nBlockUse=0x0012ef90, const char *
szFileName=0x00508680, int nLine=0xffffffff) Line 267 + 0x7 C
msvcr71d.dll!_malloc_dbg(unsigned int nSize=0x00000000, int
nBlockUse=0x00000000, const char * szFileName=0x00325f40, int
nLine=0x0012fc74) Line 176 + 0x1b C
MyTestProg.exe!0047e055()
MyTestProg.exe!0047d795()
mfc71ud.dll!ATL::CSimpleStringT<wchar_t,1>::Attach(ATL::CStringData *
pData=0x0012ef80) Line 712 + 0x8 C++
mfc71ud.dll!ATL::CSimpleStringT<wchar_t,1>::~CSimpleStringT<wchar_t,1>()
 Line 265 C++
mfc71ud.dll!ATL::CStringT<wchar_t,StrTraitMFC_DLL<wchar_t,ATL::ChTraitsCRT<wchar_t>


MyTestProg.exe!00471095()
mfc71ud.dll!AfxWndProcBase(HWND__ * hWnd=0x0012ef80, unsigned int
nMsg=0x0012ef9c, unsigned int wParam=0x0047c08d, long
lParam=0x0012f3cc) Line 209 + 0x27 C++
MyTestProg.exe!0047beb1()
user32.dll!77d487ff()
MyTestProg.exe!0047c6e0()
MyTestProg.exe!004a8d7c()
 MyTestProg.exe!004a8d8c()
 MyTestProg.exe!004a78d3()
 MyTestProg.exe!004a7915()
 MyTestProg.exe!004a6e78()
 MyTestProg.exe!004a6e9a()
 MyTestProg.exe!0046ffc1()
 user32.dll!77d4b7ab()
 mfc71ud.dll!CComboBox::GetItemData(int nIndex=0x0012f3cc) Line 743 +
0x44 C++
 MyTestProg.exe!00473688()
 mfc71ud.dll!CHandleMap::LookupPermanent(void * h=0x000400f6) Line 116
+ 0x16 C++
 mfc71ud.dll!CWnd::AssertValid() Line 888 + 0xf C++
 mfc71ud.dll!CDialog::AssertValid() Line 780 C++
 mfc71ud.dll!AfxAssertValidObject(const CObject * pOb=0x00000001, const
char * lpszFileName=0x0012f148, int nLine=0x7c34d5dc) Line 104 C++
 MyTestProg.exe!00507fe3()
 mfc71ud.dll!ATL::CTraceFileAndLineInfo::operator()(unsigned long
dwCategory=0x000003e8, unsigned int nLevel=0x00000000, const char *
pszFmt=0x00457d7e, ...) Line 163 + 0x27 C++
mfc71ud.dll!CCmdTarget::OnCmdMsg(unsigned int nID=0x000003e8, int
nCode=0x00000000, void * pExtra=0x00000000, AFX_CMDHANDLERINFO *
pHandlerInfo=0x00000000) Line 396 + 0x27 C++
mfc71ud.dll!CDialog::OnCmdMsg(unsigned int nID=0x000003e8, int
nCode=0x00000000, void * pExtra=0x00000000, AFX_CMDHANDLERINFO *
pHandlerInfo=0x00000000) Line 88 + 0x18 C++
mfc71ud.dll!CWnd::OnCommand(unsigned int wParam=0x000003e8, long
lParam=0x000400dc) Line 2550 C++
mfc71ud.dll!CWnd::OnWndMsg(unsigned int message=0x00000111, unsigned
int wParam=0x000003e8, long lParam=0x000400dc, long *
pResult=0x0012f368) Line 1759 + 0x1c C++
mfc71ud.dll!CWnd::WindowProc(unsigned int message=0x00000111, unsigned
int wParam=0x000003e8, long lParam=0x000400dc) Line 1745 + 0x1e C++
mfc71ud.dll!AfxCallWndProc(CWnd * pWnd=0x0012fbf4, HWND__ *
hWnd=0x000400f6, unsigned int nMsg=0x00000111, unsigned int
wParam=0x000003e8, long lParam=0x000400dc) Line 241 + 0x1a C++
mfc71ud.dll!AfxWndProc(HWND__ * hWnd=0x000400f6, unsigned int
nMsg=0x00000111, unsigned int wParam=0x000003e8, long
lParam=0x000400dc) Line 389 C++
mfc71ud.dll!AfxWndProcBase(HWND__ * hWnd=0x000400f6, unsigned int
nMsg=0x00000111, unsigned int wParam=0x000003e8, long
lParam=0x000400dc) Line 209 + 0x15 C++
user32.dll!77d48709()
user32.dll!77d487eb()
user32.dll!77d4b368()
user32.dll!77d70494()
user32.dll!77d4b743()
user32.dll!77d4b7ab()
user32.dll!77d7fc9d()
user32.dll!77d76530()
user32.dll!77d58386()
mfc71ud.dll!CThreadLocal<AFX_MODULE_THREAD_STATE>::GetData() Line 177
+ 0xd C++
mfc71ud.dll!AfxGetThread() Line 142 + 0x5 C++
mfc71ud.dll!AfxGetMainWnd() Line 36 + 0x11 C++
mfc71ud.dll!CWinThread::ProcessMessageFilter(int code=0x000400dc,
tagMSG * lpMsg=0x00000202) Line 872 + 0x5 C++
user32.dll!77d48709()
user32.dll!77d487eb()
user32.dll!77d4ecd2()
user32.dll!77d70494()
user32.dll!77d489a5()
user32.dll!77d553a0()
user32.dll!77d70494()
user32.dll!77d489e8()
user32.dll!77d6e819()
mfc71ud.dll!CWnd::IsDialogMessageW(tagMSG * lpMsg=0x001445f8) Line
200 C++
mfc71ud.dll!CWnd::PreTranslateInput(tagMSG * lpMsg=0x001445f8) Line
4512 C++
mfc71ud.dll!CDialog::PreTranslateMessage(tagMSG * pMsg=0x001445f8)
Line 83 C++
fc71ud.dll!CWnd::WalkPreTranslateTree(HWND__ * hWndStop=0x000400f6,
tagMSG * pMsg=0x001445f8) Line 3129 + 0x12 C++
mfc71ud.dll!AfxInternalPreTranslateMessage(tagMSG * pMsg=0x001445f8)
Line 238 + 0x12 C++
mfc71ud.dll!CWinThread::PreTranslateMessage(tagMSG * pMsg=0x001445f8)
Line 795 + 0x9 C++
mfc71ud.dll!AfxPreTranslateMessage(tagMSG * pMsg=0x001445f8) Line 257
+ 0xf C++
mfc71ud.dll!AfxInternalPumpMessage() Line 183 + 0x18 C++
mfc71ud.dll!CWinThread::PumpMessage() Line 916 C++
mfc71ud.dll!AfxPumpMessage() Line 195 + 0xb C++
mfc71ud.dll!CWnd::RunModalLoop(unsigned long dwFlags=0x00000004) Line
4566 + 0x5 C++
mfc71ud.dll!CDialog::DoModal() Line 527 + 0xc C++
MyTestProg.exe!004703dc()
ole32.dll!774f43e3()
MyTestProg.exe!00470245()
ntdll.dll!_RtlpAllocateDebugInfo@0() + 0x8b
ntdll.dll!_LdrUnlockLoaderLock@8() + 0x5f
ntdll.dll!_LdrGetDllHandleEx@20() - 0x29